State | Connecticut |
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Name | Upper slice of Canaan Mountain Schist |
Geologic age | Cambrian? |
Lithologic constituents |
Major
Metamorphic > SchistDark-gray to silvery, generally rusty weathering, medium- to coarse-grained, well-foliated, massive to well-layered schist and schistose gneiss, composed of quartz, plagioclase, biotite, muscovite, and generally garnet and sillimanite.
Metamorphic > GneissDark-gray to silvery, generally rusty weathering, medium- to coarse-grained, well-foliated, massive to well-layered schist and schistose gneiss, composed of quartz, plagioclase, biotite, muscovite, and generally garnet and sillimanite.
Minor
Metamorphic > Amphibolite
|
Comments | Part of Western Uplands; Proto-North American (Continental) Terrance - Displaced Iapetus Terrane |
References | Rodgers, John, compiler, 1985, Bedrock Geological Map of Connecticut: Connecticut Geological and Natural History Survey, Hartford, Connecticut, 2 sheets, scale 1:125,000. |
NGMDB product | |
Counties | Litchfield |